Dictionary > Fluence

Fluence

Fluence
a measure of the quantity of x-radiation in a beam in diagnostic radiology, either particle fluence, the number of photons entering a sphere of unit cross-sectional area, or energy fluence, the sum of the energies of the photons passing through a unit area.
Compare: flux.
Origin: L. Fluentia, a flowing, fr. Fluo, to flow


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